Dr. Tsze Chan's, together with Dr. Andrei Streke, has been conducting meta-analysis research using the What Works Clearinghouse datasets. In the GEIS 2017 conference in Cape Town, Dr. Tsze Chan hosted two poster presentations: one on whether individual/small group K-12 math interventions are more effective than interventions delivered to larger groups such as classrooms or schools, a second one on the impact of technology on early childhood Reading programs. Dr. Tsze Chan recently retired from his post as a principal statistician from the American Institutes for Research (AIR, US), working on the psychometrics of G3-high school state testing on Math, ELA and Science for the state of Washington, West Virginia, among others. Prior to the psychometric work, Dr. Chan served on the What Works Clearinghouse technical committee when hosted by AIR.